Java Spring注解与接口开发 之二 —— 注解要求

顺序从上到下：

Controller类名要加@RestController，引用service类定义加@Resource，函数@RequestMapping(value = "/list", method = RequestMethod.GET)

@RestController
@RequestMapping(value = "/rest/v1/user/info")
public class UserInfoController {
private static final Logger log =
LogManager.getLogger(UserInfoController.class);
@Resource
private IUserInfoService userInfoService;
@RequestMapping(value = "/id/{id}", method = RequestMethod.GET)
public UserInfo getUserById(@PathVariable int id) {
return userInfoService.findById(id);
}
@RequestMapping(value = "/list", method = RequestMethod.GET)
//@LoginToken
public List<UserInfo> getAll() {
return userInfoService.getAll();
}
@RequestMapping(value = "/save", method = RequestMethod.POST)//Add User
//@LoginToken
public UserInfo save(@RequestBody String data) {
ObjectMapper mapper = new ObjectMapper();
UserInfo ui;
try {
ui = mapper.readValue(data, UserInfo.class);
//ui.setRegTime((new java.text.SimpleDateFormat("yyyy-MM-dd hh:mm:ss")).format(new Date()));
//ui.setVisitTime((new java.text.SimpleDateFormat("yyyy-MM-dd hh:mm:ss")).format(new Date()));
//ui.setDeleted(0);
return userInfoService.save(ui);
} catch (JsonParseException e) {
log.error(e.toString());
return null;
} catch (JsonMappingException e) {
log.error(e.toString());
return null;
} catch (IOException e) {
log.error(e.toString());
return null;
}
}
}

Impl类名要加@Service(什么时候加@Transactional？)，定义implements类，引用repo类定义要加@Autowired

@Service
public class UserNoteServiceImpl implements IUserNoteService{
@Autowired
private UserNoteRepo userNoteRepo;
@Override
public List<UserNote> findBySysId(int sysId) {
return userNoteRepo.findAllByUserId(sysId);
}
}

Service和repo层是interface，定义时不用加注解

Entity类名要加@Entity和对应的表@Table(name="TEST")

@Entity
@Table(name="DTT_USERINFO")
@JsonIgnoreProperties(value = { "deleted" })
public class UserInfo implements Serializable{
}

定义变量要加 @Column(name="EMP_NAME", length=50, nullable=true)， 主键用@Id，表示自增加

	@Id
@GeneratedValue(strategy=GenerationType.IDENTITY)
private Integer id;

最后

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